Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu hach - canh tranh va nhung cong dan ((chan cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hach - canh tranh va nhung cong dan ((chan cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu hach - canh tranh va nhung cong dan ((chan cau) or (phan cau))*.